Oil burner



Aug. 8, 1925. 1,549,861

w. B. FOGH OIL BURNER Filed "a? 25, 1924 WaH'er B. Fog/2 Patented Aug. 18, 1925.

' UNITED STATES v v 1,549,861 PATENT OFFICE WALTER B. FOGH, OF SEATTLE, WASHINGTON, ASSIGNQB TO FOGH MANUFACTURING- COMPANY, OF SEATTLE, WASHINGTON, A CORPOBATION OF WASHINGTON.

on. roam.

Application filed Kay 26, 1924. Serial No. 715,900.

which has :been particularly designed for use in small installations, such, for instance,v

as the heating of small and medium sized residences. 'Whrle it is especially well adapted for this kind of use, it can, of course, be used for burners of larger capacity.

The object of my invention is to provide a burner for this character of service which is of simple construction, so that it, may be operated safely and certainly by inexperienced'people, and one which may be cheaply installed and which will give reliable service. Other objects of my invention will appear from a study of the following specification and the accompanying drawings,

The parts of my invention upon which I desire to obtain a patent will be hereinafter defined by the claims.

The accompanying drawings are given as illustrative ofthe principle of my invention and ofthe character of construction which I now prefer to employ.

Figure 1' is a longitudinal vertical section through the burner. Figure 2 is a sketch showing a side elevation of the complete apparatus in its rela tion'to the door of the furnace.

Figure 3 is an end view of the discharge end of the burner.

ed to employ an oil which is normally of such fluid character that it will flow through ordinary pipes without having tobe heated. As an illustration of the type of oil-which it is intended this burner shall use, mention is made of what is known to the trade as Diesel oil, or sometimes as gas oil. Any oil which is sufllciently fluid to flow readily through small pipes may be employed.

The burner is of that type in which the flow of oil to the discharge end and the mix- I I. ing of the oil with the air blast is produced by a suction caused by the passage of the air supply as a blast past the discharge opening for the oil. This is the same princi- This burner is of a type which is intendple as is employed in an ordinary air-operated atomizer.

The burner employs a tubular casin 1, which is connected at one end, as by aliell 11, with some source of air under pressure,

as, for instance, a rotative fan 10. Within this burner and preferably occupying an axial position therein, is the oil discharge nozzle 2. This is supplied through a channel formed in a leg or arm 20, which extends inward from one side of the tubular casing 1. A pipe 21 connected with this end,

supplied with a controlling valve 22, providles the oil and supplies means for its contro The controlling means for the discharge consists of a compound valve. This consists of a body 4 which is'of a conical shape, pref crably, with the sides lines coned or curved as indicated, instead of being straight. This gives a flaring space of a size to substantially fill the discharge end of the tubular casing 1, to thereby control the discharge therefrom. The tip of this valve is so positioned with relation to the oil discharge nozzle 2 that when inwardly adjusted it will enter the discharge orifice, and when the valve is sufficiently drawn back into the casing 11- will substantially, if not entirely, close this discharge orifice. It is thus seen that this valve mechanism controls, at the same time, both-the discharge of oil' and a discharge of air and oil mixture for burning.

The valve 4 is carried by an arm 43' which connects it with a sleeve 3 rotatably mounted upon the tubular casing 1. As a matter of convenience this sleeve is mounted outside of the casing, although it, is evident that it may, if so desired, be mounted within the casing. This sleeve and the casing are provided one with a pin as 12 and the other with a slot as 30 which receives said pin, which slot 30 extends in a helical direction, thereby forming cam surfaces coacting with the in 12 so that when the sleeve 3 is turnedit Wlll also be given a lengthwise movement and as the valve is carried thereby the valve will be moved to close or open the discharge orifices. The position of the sleeve may be controlled by any suitable means, as by the trols the discharge from the mixing chamher or casing 1. To secure this result I provide the cone 4 with an axial bore in which is mounted a rod 5 provided at one end with threads as 52 cooperating with threads formedin the end of the valve. The other, or inner end of the bar 5, is coned to conform measurably with the angle of coning of the main body 4. The extreme tip of this rod is preferably provided with a pin-like extension 51, which enters the oil discharge orifice and which is preferably slightly 'coned so as to act as a needle valve and also as valves, one for the control of the oil and Lil the other for the control of the mixture so as to be moved together, the ad ustment of one adjusts the other and therefore the proper mixture is automatically secured.

By making the two portions thereof so that they are adjustable, one with relation to the other,-a proper adjustment between the amount of oil and airmay be readily secured.

I have found that while the above device is very simple and cheap in construction, it is effective in action and may be madein sufiiciently small size as to adapt it for the heating of quite small residences.

What I claim as my invention is:

1. An oil burner having a tubular shell desi ed to receive a forced air draft, an

g s charge nozzle centrally located within said shell with its discharge end well back from and discharging towards the discharge end of said shell, a conical valve having its tip positioned to control the oil discharge nozzle and its base to control the discharge of said enclosing shell, the base and tip of said cone being made as separate parts adjustable relative to each other lengthwise of the axis of the cone, and means for adjplslfing the cone lengthwise of the enclosing s e 2. An oil burner comprising a tubular shell adapted to receive a forced blast of air at one end, an oil supply nozzle axially mounted in said shell and discharging within and towards the discharge end of the shell, a cone extending into the discharge end of the shell and adapted by axial adjustment to control the discharge both of the shell and the oil nozzle, a sleeve rotatively mounted on the shell and having supporting connection with said cone, the sleeve and shell having engaging guide members producing an axial movement of the cone V by a rotative movement of the sleeve.

3. An oil burner comprising a tubular shell adapted to receive a forced blast of air at one end, an oil supply nozzle axially mounted in said shell, a cone extending into the shell and adapted by axial adjustment to control the discharge both of the shell and the oil nozzle, a sleeve rotatively mounted on the shell and having supporting connection with said cone, the shell having a radially projecting pin and the sleeve an "angularly positioned slot receiving said pin,

whereby turning the sleeve produces an axial movement of the sleeve and its connected valve cone.

Signed at Seattle, King County, Washington, this 17 th day of May, 1924.

WALTER B. FOGH. 

